Process of manufacturing glass vacuum-wall bottles.



0. J. W. HIGBBE.

PROCESS 0F MANUFACTURING GLASS VACUUM WALL BOTTLES.

A APPLICATION FILED NOV. 29, 1910. 1 ,004,25'7.

Patented 891115.26, 1911.

a SHEETS-SHEET 1`.

FIG. 1V

O. J. W. HIGBBE.

. 29, 1910. 1,004,257. Patented Sept. 26, 1911.

2 SHEETS-'SHEET 2.

l .IIIIIIIIIIIIIII FIG. 4

ORLANDOiJ'. W. HIGBEE, OFPITTSBURG, PENNSYLVANIA.

PROCESSI-F MANUFACTURING GLASS VACUUM-WALL BOTTLES.

"Specicationof Letters Patent.

,Patented Sept. 26, l1911.

Application led'November 29, 1910. Serial No. 594,680.1'EIS lthefollowingyis a specification.

My invention conslsts in a'new and improved process for themanufacture'of vac-y uum wall receptacles of glass.

Vacuum wall receptacles of glass, as now made, are composed of an innerbottle contained .within-'anouter bottle and connected thereto by across'wall of' glass luniting the outer ends ofthe bottle necks, thevacuum 'chamber extending up between said necks.

Asl this relatively think wall of glass forms the sole 'attachmentbetween the two bottles,

the inner bottle is easily broken loose from i the outer bottle and theusefulness of the receptacle destroyed unless the whole be inclosedin acushioning outer case or box. An attempt to sterilize such a receptaclewould result in its inevitable destruction, and the forcible insertionlor withdrawal of a cork lis, frequently attended by a like result. In

y some cases manufacturers have attem ted to support -theinner bottle bymeans of orei n bodies .or supports `interposed between t e bottles, butthis expedient has .not proven successful and'adds `to the expense lofmanufacture. Some better method is required for the efficient'attachment and support 'of the inner bottle and the prevention of itsvibration 4which would result in its breaking away from theOu'terbottle.

Inthe case of my lmproved vacuum wall glass receptacle, the'necks of thetwo bottles telescope snugly and, when heated, are welded together forsubstantially their entire lengt c c the inner bottle fito the outerbottle in such a rigid and permanent manner that there is practic'znlyno vibration of the 'inner bottle l and no foreign-supports need beresorted to or cushioning case supplied to prevent a jar or blowfrombreaking the union between the two bottles. There 4is `also no danger of.breaking such union by the process of sterilization and the integral'neck of the receptacle, thus formed, successfully resists rough .ltreatment in inserting or withdrawing -the cork o r stopper. I thus alsodo away with s, thus securing or suspending the extension of the vacuumchamber up between the bottle necks where it serves no useful purposebut weakens the structure. Again 1n theV types of vacuum wallreceptacles now in use hollow projections are formed -in the bottom ofthe outer bottle by means of which the air is withdrawn and the vacuumestablished. These projections when sealed'ofl so distort the bottom ofthe outer bottle that the receptacle cannot rest stably on its own basebut must be inserted in an outer casing or box. This greatly adds to'the cost of the complete devi'ce'and renders the same. a luxury not tobe utilized for ordinary domestic purposes.

In the manufacture of my receptacle I provide a hollow'projection on theshoul er of the outer bottle, adjacent to its neck, by which the airis-withdrawn, and which, when sealed off, Vdoes not interfere with thesta` bility of the bottle when placed-on end.y

As my receptacle is primarily intended to be used without anout'ercasing or box but uncovered', a's an inexpensive bottlefor hold-lin li uids in the household, such as milk, in ants food, &c., for whichan ex ensivle receptacle would not be justified, t e im- 'proved andstronger method of attaching the inner bottle to `the outer bottle, sothat comparatively rough usage, rap id changes in temperature as 1nsterlllzation, or theV forcible insertion or withdrawal of a cork .willnot break such attachment or destroy the vacuum, and the stability ofthe receptacle when standing upright on the bottom of the outer bottle,greatly widen the scope of its usefulness.

In the raccompanying drawings, which.

turing vacuum wall receptacles, Figure 1 is a vertical section .showingvthe innerbottle blown in a mold; Fig. 2 is a plan vlew of the same;Fig. 3 is a vertical section showing the outer bottle pressed in a mold;Fig. 4 is a plan view of the same; Fig. 5 1s a vertical section showingthe two bottles assembled on a snap and ready to'be welded together attheir necks, and Fig. 6 1s a ver villustrate my improved method ofmanufactical section of the receptacle assembled and illustrating themeans for producing a vacuum in the space between the two bottles.

The following is a detailed description of myprocess of manufacturingthe article as illustrated in said drawings. v 4A is a blow mold,within. which is formed A 3 is provided with a restricted neck Ll.v On

the shoulder of bottle 3, adjacent to its neck, I form ahollowzprejection 5 which is later .produced into a hollow tube forwithdrawn ing the air to form the Vacuum. The open bottom of bottle 3 ispreferably rovided with a bead-6 to enable the snap to engage the same.The inner bottle 1 is nowplaced upright in the raised seat .7 of thesnap D and the outer'bottle 3 is passed down over the bottle 1, thesidesof the seat 7 guiding the wall of the bottle 3 in proper alinement untilthe lower edge of said bottle rests'upon the. ledge 8 of saidl seat 7.The neck 4 of bottle 3 telescopes snugly over the neck 2 of bottle A1,and the beaded edge 6' is engaged bythe" jaws 9 9 of the snap D,

thus holdingthe two bottles rmly together in place. The necksofthe twobottles are then reheated and'w-elded together for substantally theirentire lengths by means'of a suitable finishing tool, the hollowprojection 5 being during the same heat produced to '-form a'hollow tube5a for attachment to a vacuum pump. The integral neck of the receptacleis nowV seized by asuitable tool and the jaws of the snap D relaxed torelease the bottle 3. The bottom edge of bottle 3 is now reheated anddrawn together in the usual manner to form a flat stable bottorn ofsaidbottle as shown in Fig. 6. The tube 10 of a suitable vacuum. pump, not

. shown, is ynow attached to tube 5a and the vair withdrawn from thespace between the two bottles. The -tube 5EL is then sealed off, asshown at 11 in Fig. 6, thus maintaining the vacuum'.

It is evident from the foregoing that my improved-process greatlycheapens and expedites the manufacture of vacuum wall receptacles andproduces, at less expense, an article which-is substantial enough toresist rough usage, sudden changes in temperature, the forciblewithdrawal of a cork' or stopper orinsertion of the same and the otherordinary accidents of domestic use. It is also evident that by formingthe hollow copies ot this patent may beobteined for r-bottle3isformedprojection 5 adjacent to the neck 'of the bottle 3 Iain enabled toreheat the glass vof said projection during the same step when l reheatthe bottle neck for welding the same, thus enabling me to. weld suchnecks and produce the hollow tube 5a in one and the same'step, while, ifsuch projection 5 and the tube 5 were formed in the bottom of the outerbottle after the same was gathered, it would require an additionaloperation in the process-thatl of again reheating the bottom of thebottle to form the tube 5a. I thus greatly shorten and cheapen theprocess by reducing the number of operations requiredpin the same. l

What I desire to claim is 1. The process of 'manufacturing vacuum wallglass receptacles which consists in, first, forming a closed bottombottle having a neck and a larger open bottom bottle having a neckadapted to telescope snugly overl the neck of said lirst bottle, second,inserting said first bottle in said second bottle and welding theirnecks together for substantially their entire length, third, gatheringthe open bottom of said second bottle to inclose the same, and, fourth,establishing and sealing a vacuum the space between said bottles, for.the purpose described.

2. The process of manufacturing vacuum wall glass receptacles whichconsists in, first, rorlning a closed bottom bottle and a larger openbottom bottle havin a neck adaptedto telescope over the nec of saidfirst bottle and forming a hollow projection on said second bottleadjacent to its neck, second insertin said rst bottle in said secondbottle, wel ing'their necks together for substantially their entirelengths and producing said hollow projection into a hollow tube, third,gathering the open bottom of ,said second bottle to inclose the same,

fourth, withdrawing the air from the space between said bottles throughsaid hollow tubeto form a vacuum chamber, and, fifth, sealin .off saidtube to maintain said vacumn, or the purpose described.

Signed at Pittsburg, Penna., this 25th day of November, 1910.

ORLANDO J. W. HIGBEE., Witnesses: T. CHALMERS DUrF,

Enwann A. LAWRENCE.

five cents each, by addressing the Gommssioner of Patents, Washington,D. C. l

